18147179081 has 16 divisors (see below), whose sum is σ = 18426777600. Its totient is φ = 17870379408.

The previous prime is 18147179059. The next prime is 18147179093. The reversal of 18147179081 is 18097174181.

It is a cyclic number.

It is not a de Polignac number, because 18147179081 - 2¹⁴ = 18147162697 is a prime.

It is a super-2 number, since 2×18147179081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18147178081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10315880 + ... + 10317638.

It is an arithmetic number, because the mean of its divisors is an integer number (1151673600).

Almost surely, 2^18147179081 is an apocalyptic number.

It is an amenable number.

18147179081 is a deficient number, since it is larger than the sum of its proper divisors (279598519).

18147179081 is a wasteful number, since it uses less digits than its factorization.

18147179081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468.

The product of its (nonzero) digits is 112896, while the sum is 47.

The spelling of 18147179081 in words is "eighteen billion, one hundred forty-seven million, one hundred seventy-nine thousand, eighty-one".